Lionel Walter Rothschild

Baron Lionel Walter Rothschild, a British banker turned zoologist, was born Feb. 8, 1868. Son and heir to the Rothschild financial empire, Walter rejected the world of business in favor of collecting. However, he did not turn away from the financial resources that...

David Ansted

David Thomas Ansted, an English geologist and popular science writer, was born Feb. 5, 1814.  Ansted had a good career as a geologist, teaching at King’s College London, and lecturing as well to members of the British East India Company and a school for civil...

Clyde Tombaugh

Clyde Tombaugh, an American astronomer, was born Feb. 4, 1906. Tombaugh was born in Illinois, but he was raised on a farm in Burdett, Kansas, and he would eventually graduate from the University of Kansas in Lawrence in 1936. But before attending KU, he did what few...

Salomon de Caus

Salomon de Caus was a French artisan-engineer who was born in Dieppe in 1576, and died in 1626.  We do not have a birthday or a death day for de Caus, but we decided to feature him today anyway, because he deserves our notice, and because we have several of his books...

Henri Chrétien

Henri Chrétien, a French optician and astronomer, was born Feb. 2, 1879.  Chrétien is known for two rather different achievements, although both were a product of his expertise in optics.  First of all, he designed a telescope lens system that is now the most widely...